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What size and how many holes on Spraybar.

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What size and how many holes on Spraybar.

Postby Katfish » Fri Nov 09, 2012 1:54 pm

I am going to make a full length spray bar for my 6ft tank but unsure on how many holes I need and size to get a near even flow out of the holes.

The pipe is 15mm internal dia that I am going to use for the spray bar.

The pump supplying the spray bar is rated at 3400l/ph with a 16mm hose outlet.

Can anybody help ?
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Re: What size and how many holes on Spraybar.

Postby superdart » Fri Nov 09, 2012 2:08 pm

I aim for a full but gentle flow from a spray bar so I drill the holes 6mm dia and about 70mm apart and adjust the angle to gently agitate the surface.
If it has fin's and swim's I'm interested in it....
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Re: What size and how many holes on Spraybar.

Postby Katfish » Fri Nov 09, 2012 2:57 pm

I am not looking for surface movement due to using co2 I am looking at pointing the holes down to give some movement to the plants etc.
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Re: What size and how many holes on Spraybar.

Postby superdart » Fri Nov 09, 2012 3:06 pm

Katfish wrote:I am not looking for surface movement due to using co2 I am looking at pointing the holes down to give some movement to the plants etc.

Same hole size and adjust the angle to your requirements for flow angle.
If it has fin's and swim's I'm interested in it....
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Re: What size and how many holes on Spraybar.

Postby Anita » Fri Nov 09, 2012 4:14 pm

Would there be water coming out of the holes for last 3 or 4 foot?
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Re: What size and how many holes on Spraybar.

Postby Katfish » Fri Nov 09, 2012 8:20 pm

yes there will be.

But I have now done it I have put 3mm hole every 2" which worked out 34x3mm holes in the pipe.

It gives great flow out of every hole
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Re: What size and how many holes on Spraybar.

Postby Anita » Fri Nov 09, 2012 8:57 pm

Good, I wondered whether the flow would have deteriorated by the time it reached the end.
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Re: What size and how many holes on Spraybar.

Postby Katfish » Fri Nov 09, 2012 9:14 pm

yep seems to be working great I will give it a few days a see how it goes.

I have put up a picture of the filter I am using on this spray bar in my Journal thread.

Its a beast of a filter due to the mods I made to it
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